Another word for vertical
vertical upright perpendicular plumbSearch Thesaurus
These adjectives mean being at or approximately at right angles to the horizon or to level ground. Vertical and upright are often used to signify contrast with what is horizontal: wallpaper with vertical stripes; an upright column. Perpendicular and plumb are generally used to specify an angle of precisely 90 degrees: a perpendicular escarpment; careful to make the doorjambs plumb.